BoilerFaultCodesWhat the manual says
Manufacturer manualDefault status, no request for heating or domestic water. If an EBUS controller is connected to the boiler, check that a wiring link is present on terminals 3 and 4 of the boiler's main board.
From this model's manual
Verified against the Glow Worm/Glow Worm Betacom 2 24 installation & service manual.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register →
Boiler cover options
Avoid the next call-out bill
A cover plan would handle faults like S.30: no call-out fees, no surprise bills.
Approved partner
Get a quote →
Domestic Appliance Guard
Unlimited call-outs, 24/7 helpline, no price-hike promise
Affiliate links. We may earn a commission at no extra cost to you.
All 58 fault codes on the Betacom2 28
Seeing a different code? Every code this model can display, in one place.